CN110744248A - Welding set is restoreed to track link joint tooth strip - Google Patents
Welding set is restoreed to track link joint tooth strip Download PDFInfo
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- CN110744248A CN110744248A CN201911000982.3A CN201911000982A CN110744248A CN 110744248 A CN110744248 A CN 110744248A CN 201911000982 A CN201911000982 A CN 201911000982A CN 110744248 A CN110744248 A CN 110744248A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
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Abstract
The invention belongs to the technical field of welding devices, and particularly relates to a caterpillar chain plate tooth bar repairing and welding device. In order to solve the problem of low repairing efficiency of the traditional track shoe tooth bars, the invention provides a track chain plate tooth bar repairing and welding device which comprises a mechanical movement unit, wherein the mechanical movement unit consists of four parts, namely a chain plate fixing mechanism, a workbench overturning mechanism, a welding gun position adjusting mechanism and a travelling mechanism. The automatic turnover welding gun can be used for fixedly installing the track chain plate, automatically overturning the track chain plate under manual control, adjusting the position of the welding gun and walking the track chain plate, so that the automation degree of processes such as welding teeth at the abrasion part of the track chain plate is improved, the repair quality can be ensured, the repair efficiency is improved, and the labor intensity of operators can be greatly reduced.
Description
Technical Field
The invention belongs to the technical field of welding devices, and particularly relates to a caterpillar chain plate tooth bar repairing and welding device.
Background
The crawler excavator has the defects that the tooth bars of the crawler chain plates are seriously abraded and the grasping ability is reduced due to large load capacity and uneven walking road surface. According to the calculation, the track link joint tooth bar needs to be repaired when the crawler excavator works for about 2 months under full load.
The traditional track shoe tooth bar repairing process comprises the following steps: and fixing the chain plate and the tooth bars by using a fixture, and welding the tooth bars to the worn track shoe. And after the front welding is finished, the chain plate and the tooth bar are integrally turned over manually, and the back side is welded to finish the welding repair work of the track chain plate. By adopting the procedures, the repairing efficiency is lower, and the labor intensity of manual welding is high and great potential safety hazards exist due to the fact that the chain plates and the tooth bars are heavy (the weight of the caterpillar chain plates is about 80kg, and the weight of the tooth bars is about 10 kg).
Disclosure of Invention
In order to solve the problem of low repairing efficiency of the traditional track shoe tooth bars, the invention provides a track link plate tooth bar repairing and welding device.
The invention discloses a repairing and welding device for a track chain plate tooth bar, which comprises a mechanical movement unit, wherein the mechanical movement unit consists of four parts, namely a chain plate fixing mechanism, a workbench turnover mechanism, a welding gun position adjusting mechanism and a travelling mechanism.
The crawler belt plate fixing mechanism comprises a crawler belt plate fixing turnover plate, a positioning pin, a crawler belt plate clamping head and a clamping cam, wherein the crawler belt plate fixing turnover plate is used for mounting a crawler belt plate and can turn over; the workbench turnover mechanism consists of a bearing seat, a bearing seat support, a gear, a creeper tread turnover cycloid speed reducing motor, a turnover tread positioning pin and an electromagnet, wherein the bearing seat is arranged on the bearing seat support and is driven by the creeper tread turnover cycloid speed reducing motor; the welding gun position adjusting mechanism consists of a welding gun clamping butterfly nut, a welding gun insulating sleeve, a welding gun inclination angle fixing butterfly nut, an opening and closing arm, a back welding gun adjusting hand wheel, a front welding gun adjusting hand wheel, a welding gun integral adjusting frame, a double-gun front and back adjusting hand wheel, a fixed screw nut sliding block, a front gun adjusting sliding block and a back gun adjusting sliding block; the traveling mechanism is composed of a guide rail, a base, a sliding block, a moving platform, a nut frame, a moving platform control cycloid speed reducing motor, a chain wheel and a lead screw, the base is provided with the guide rail and the moving platform control cycloid speed reducing motor, the guide rail is provided with the moving platform, the sliding block is arranged between the moving platform and the guide rail, and the moving platform is provided with a bearing seat support and a track shoe overturning cycloid speed reducing motor.
Further, the welding device further comprises a control unit for controlling the mechanical movement unit.
Further, the control unit comprises a circuit breaker, a 24V20A switching power supply, a PLC, a frequency converter, a communication part between the PLC and the frequency converter, an alternating current contactor, a control relay, a thermal overload relay, an emergency stop switch, a button switch, a travel switch, a signal lamp, a tooth bar conveying mechanism motor, a turnover table motor, a moving table motor and a speed regulation potentiometer.
Furthermore, a mode that a control relay is matched with an alternating current contactor is adopted as a medium for communication between the output end of the PLC and the motor; thermal overload relays are arranged between main contacts of alternating current contactors KM1 and KM2 and a motor M1 of the rack conveying mechanism, between a main contact of the alternating current contactor KM3 and a motor M2 of the overturning table, and between a control output end of a motor of the frequency converter and a motor M2 of the mobile table.
Further, the specific connection mode between the PLC output port and the motor is as follows: the PLC output port is connected with a control relay coil, a normally open contact of the control relay is connected with an alternating current contactor coil, and three-phase electricity is connected to a motor wiring terminal through the normally open contact of the alternating current contactor.
Further, the PLC input ports are configured as follows:
the overturning platform positioning pin pulling-out limit switch SE1 is connected between the PLC input port I0.0 and the PLC24V output port;
a tooth bar feeding-to-position travel switch SE2 is connected between a PLC input port I0.1 and a PLC24V output port;
the stroke switch SE3 for the tooth bar to exit to the position is connected between the PLC input port I0.2 and the PLC24V output port;
the travel switch SE4 for welding start position of the mobile station is connected between the input port I0.3 of the PLC and the output port of the PLC 24V;
the travel switch SE5 for the welding termination position of the mobile station is connected between the input port I0.4 of the PLC and the output port of the PLC 24V;
the tooth bar feeding switch SB1 is connected between the PLC input port I0.5 and the PLC24V output port;
the tooth bar exit switch SB2 is connected between the PLC input port I0.6 and the PLC24V output port;
the roll-over table roll-over switch SB3 is connected between the PLC input port I0.7 and the PLC24V output port;
the forward operation switch SB4 of the mobile station is connected between the PLC input port I1.0 and the PLC24V output port;
the reverse operation switch SB5 of the mobile station is connected between the PLC input port I1.1 and the PLC24V output port.
Further, the PLC output ports are configured as follows:
an alternating current contactor KM1 coil is connected to a PLC output port Q0.0 through a control relay KA1, and a main contact of the alternating current contactor is connected with a tooth bar conveying mechanism motor to enable the tooth bar conveying mechanism motor M1 to rotate forwards; an alternating current contactor KM2 coil is connected to a PLC output port Q0.1 through a control relay KA2, and a main contact of the alternating current contactor is connected with a motor of the dental strip transmission mechanism to enable the motor M1 of the dental strip transmission mechanism to rotate reversely;
an alternating current contactor KM3 coil is connected to a PLC output port Q0.2 through a control relay KA3, and a main contact of the alternating current contactor is connected with a motor of the overturning platform, so that the motor M2 of the overturning platform rotates 180 degrees;
an alternating current contactor KM4 coil is connected to a PLC output port Q0.3 through a control relay KA4, a main contact of the alternating current contactor is connected with an electromagnet, the electromagnet is powered up, a positioning pin of a turnover plate is pulled out of a turnover table, and the turnover table is allowed to turn over;
an alternating current contactor KM5 coil is connected to a PLC output port Q0.4 through a control relay KA5, and a main contact of the alternating current contactor is connected with a frequency converter, so that the frequency converter can control a mobile station motor M2;
the input end of the frequency converter control signal is connected with a potentiometer to realize the adjustment of the moving speed of the mobile station motor M2;
the PLC is connected with the frequency converter through an RS232 cable, so that the PLC controls the frequency converter;
the system readiness indicator light is connected to the PLC output port Q0.5;
the welding gun lifting in-place indicator lamp is connected to a PLC output port Q0.6;
the locking indicator lamp of the turnover worktable is connected to the output port Q0.7 of the PLC;
the left walking indicator light and the right walking indicator light of the mobile station are respectively connected to the output ports Q1.0 and Q1.1 of the PLC.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a device for repairing and welding a track chain plate tooth bar, which can be used for fixedly installing the track chain plate, automatically overturning the track chain plate under manual control, adjusting the position of a welding gun and walking the track chain plate, thereby improving the automation degree of procedures such as welding the tooth bar at the abrasion part of the track chain plate and the like, ensuring the repairing quality, improving the repairing efficiency and greatly reducing the labor intensity of operators.
Drawings
FIG. 1 is a schematic structural diagram of a track link plate tooth bar repairing and welding device according to an embodiment of the invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
fig. 3 is a side view schematic of the structure of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1 to 3, a device for repairing and welding a track link joint tooth bar according to an embodiment of the present invention includes a mechanical movement unit, and the mechanical movement unit includes four parts, namely, a link joint fixing mechanism, a workbench overturning mechanism, a welding gun position adjusting mechanism, and a traveling mechanism.
In the embodiment of the invention, the chain plate fixing mechanism consists of a track plate fixing turnover plate 17, a positioning pin 18, a track plate clamping head 19 and a clamping cam 20, wherein the track plate fixing turnover plate 17 is used for mounting a track chain plate and can turn over, and the track plate to be welded is fixedly mounted on the track plate fixing turnover plate 17 through the positioning pin 18 and the track plate clamping head 19; the workbench turnover mechanism consists of a bearing seat 8, a bearing seat support 5, a gear 21, a track shoe turnover cycloid speed reducing motor 22, a turnover plate positioning pin 26 and an electromagnet 27, wherein the bearing seat 8 is arranged on the bearing seat support 5, and the bearing seat 8 is driven by the track shoe turnover cycloid speed reducing motor 22; the welding gun position adjusting mechanism consists of a welding gun clamping butterfly nut 9, a welding gun insulating sleeve 10, a welding gun inclination angle fixing butterfly nut 11, an opening and closing arm 12, a back welding gun adjusting hand wheel 13, a front welding gun adjusting hand wheel 14, a welding gun integral adjusting frame 15, a double-gun simultaneous front and back adjusting hand wheel 16, a fixing screw nut slide block 23, a front gun adjusting slide block 24 and a back gun adjusting slide block 25; the traveling mechanism comprises a guide rail 1, a base 2, a sliding block 3, a moving platform 4, a nut frame 29, a moving platform control cycloid speed reducing motor 30, a chain wheel 31 and a lead screw 32, wherein the base 2 is provided with the guide rail 1 and the moving platform control cycloid speed reducing motor 30, the moving platform 4 is arranged on the guide rail 1, the sliding block 3 is arranged between the moving platform 4 and the guide rail 1, and the moving platform 4 is provided with a bearing seat support 5 and a creeper tread overturning cycloid speed reducing motor 22.
In the specific implementation application, the installation method of the chain plate is as follows: .
Selecting a positioning pin 18 corresponding to the track shoe to be welded (positioning pins with three specifications according to the size of the track shoe), adjusting the distance between the two positioning pins (the distance between the two positioning pins and the distance between two holes on the track shoe side close to the tooth bar), and locking; then the two side creeper tread clamping heads 19 are pulled to be close to the nearest side of the two side creeper tread clamping heads, and when the creeper tread clamping heads are moved, the clamping cams 20 are firstly loosened; then transversely and vertically hoisting the creeper tread (the hole is arranged at the upper side), and pushing the creeper tread to the positioning pin and tightly attaching the creeper tread to the fixed turnover plate of the creeper tread when the hole is aligned with the positioning pin; and opening the clamping cam to move the track shoe clamping heads towards the track shoe, and locking the clamping cam after the track shoe clamping heads on the two sides are tightly contacted with the edge of the track shoe, so that the installation of the track shoe is completed.
It should be noted that: when the creeper tread is installed, the welding gun integral adjusting frame 15 should be withdrawn from the installation area of the creeper tread, and the welding gun opening and closing arm 12 should be opened forwards and backwards respectively before withdrawal. When the welding gun opening and closing arm 12 is not opened forward and backward, the track shoe turning cycloid speed reduction motor 22 cannot work and cannot turn.
In this embodiment, when the electro-magnet electrifies, the returning face plate locating pin is extracted from the returning face plate under the effect of magnetic force, allows the returning face plate upset, prevents because of maloperation or equipment trouble to personnel's harm.
In a specific implementation, the table is flipped as follows.
When the turning operation is performed, the welding gun opening and closing arms 12 are respectively opened forwards and backwards, otherwise, the turning operation cannot be performed.
After turning over, the electromagnet 27 is firstly attracted, the positioning pin 26 of the turning plate is pulled out, and the track shoe fixing turning plate starts to turn over.
After the creeper tread fixing turnover plate is turned over for 180 degrees, the creeper tread turnover cycloid speed reducing motor 22 stops running, the turnover stops, and the turnover plate positioning pin 26 enters the clamping groove.
In a specific implementation application, the welding gun position adjusting method comprises the following steps:
the welding gun integral adjusting frame 15 can be integrally adjusted up and down, but generally does not need to be adjusted after being adjusted; the height of the welding gun can be adjusted by loosening the welding gun to clamp the butterfly nut 9; the included angle of the welding wire on the vertical surface of the welding seam can be adjusted by loosening the welding gun inclination angle fixing butterfly nut 11; the integral forward and backward adjustment of the welding gun integral adjusting frame 15 is completed by rotating the double guns and adjusting the hand wheel 16 forward and backward at the same time. The amount of weld deviation from the weld can be corrected by rotating the frontal weld adjustment handwheel 14. The amount of deviation of the back welding gun from the welding seam can be corrected by rotating the back welding gun adjusting hand wheel 13.
The track link plate tooth bar repairing and welding device provided by the embodiment of the invention further comprises a control unit for controlling the mechanical movement unit.
In the embodiment of the invention, the control unit takes the PLC as a core to develop and design the hardware and the control program of the control system, and the scale of the control circuit is reduced as much as possible under the condition of finishing the same function, thereby ensuring the reliability of the operation. The control unit comprises a circuit breaker, a 24V20A switching power supply, a PLC, a frequency converter, a communication part between the PLC and the frequency converter, an alternating current contactor, a control relay, a thermal overload relay, an emergency stop switch, a button switch, a travel switch, a signal lamp, a tooth bar conveying mechanism motor, a turnover table motor, a moving table motor and a speed-regulating potentiometer.
The method comprises the following steps that a control relay is matched with an alternating current contactor to serve as a medium for communication between a PLC output end and a motor; thermal overload relays are arranged between main contacts of alternating current contactors KM1 and KM2 and a motor M1 of the rack conveying mechanism, between a main contact of the alternating current contactor KM3 and a motor M2 of the overturning table, and between a control output end of a motor of the frequency converter and a motor M2 of the mobile table.
The specific connection mode between the PLC output port and the motor is as follows: the PLC output port is connected with a control relay coil, a normally open contact of the control relay is connected with an alternating current contactor coil, and three-phase electricity is connected to a motor wiring terminal through the normally open contact of the alternating current contactor.
The PLC input ports are configured as follows:
the overturning platform positioning pin pulling limit switch SE1 is connected between the PLC input port I0.0 and the PLC24V output port, and when the PLC input port I0.0 is at a high level, the overturning platform positioning pin is completely pulled out.
The thread strip feeding to-position travel switch SE2 is connected between the PLC input port I0.1 and the PLC24V output port, and when the PLC input port I0.1 is at a high level, the thread strip is fed to the chain plate.
The stroke switch SE3 for the tooth bar to exit from the position is connected between the PLC input port I0.2 and the PLC24V output port, and when the PLC input port I0.2 is at high level, the tooth bar is indicated to exit.
The travel switch SE4 for the welding start position of the mobile station is connected between the PLC input port I0.3 and the output port of the PLC24V, and indicates that the mobile station is at the welding start position when the PLC input port I0.3 is high.
The travel switch SE5 for the welding end position of the mobile station is connected between the PLC input port I0.4 and the output port of the PLC24V, and when the PLC input port I0.4 is in a high level, the mobile station is indicated to be in the welding end position.
The tooth bar feeding switch SB1 is connected between PLC input port I0.5 and PLC24V output port, and when PLC input port I0.5 is high level, the tooth bar is fed towards the chain plate direction.
The tooth bar exit switch SB2 is connected between PLC input port I0.6 and PLC24V output port, and when PLC input port I0.6 is high level, the tooth bar exits.
The roll-over table roll-over switch SB3 is connected between PLC input port I0.7 and PLC24V output port, and when PLC input port I0.7 is high level, the roll-over table rolls over.
The mobile station forward operation switch SB4 is connected between the PLC input port I1.0 and the PLC24V output port, and the mobile station operates in the forward direction when the PLC input port I1.0 is at the high level.
The switch SB5 for reverse operation of mobile station is connected between the PLC input port I1.1 and the output port of PLC24V, and when the PLC input port I1.1 is at high level, the mobile station operates in reverse.
The PLC output ports are configured as follows:
because the PLC output port outputs the on-off signal and is difficult to directly drive the motor, the system adopts a mode of matching the control relay and the alternating current contactor as a communication medium between the PLC output port and the motor, thereby not only realizing the control of the motor of the dental strip transmission mechanism and the motor of the overturning platform, but also isolating direct current and alternating current and improving the stability of the control system.
A thermal overload relay is arranged between main contacts of alternating current contactors KM1 and KM2 and a motor M1 of the rack conveying mechanism, between a main contact of the alternating current contactor KM3 and a motor M2 of the overturning table, and between a control output end of a motor of a frequency converter and a motor M2 of the mobile table, and the thermal overload relay is used for protecting the motor.
The specific connection mode between the PLC output port and the motor is as follows: the PLC output port is connected with a control relay coil, a normally open contact of the control relay is connected with an alternating current contactor coil, and three-phase electricity is connected to a motor wiring terminal through the normally open contact of the alternating current contactor.
An alternating current contactor KM1 coil is connected to a PLC output port Q0.0 through a control relay KA1, and a main contact of the alternating current contactor is connected with a motor of the tooth bar conveying mechanism, so that the motor M1 of the tooth bar conveying mechanism rotates forwards, and feeding of the tooth bars to the direction of a chain plate is realized.
An alternating current contactor KM2 coil is connected to a PLC output port Q0.1 through a control relay KA2, and a main contact of the alternating current contactor is connected with a motor of the tooth bar conveying mechanism, so that the motor M1 of the tooth bar conveying mechanism is reversely rotated, and the tooth bar is withdrawn.
An alternating current contactor KM3 coil is connected to a PLC output port Q0.2 through a control relay KA3, and a main contact of the alternating current contactor is connected with a motor of the overturning platform, so that the motor M2 of the overturning platform rotates 180 degrees to realize overturning.
An alternating current contactor KM4 coil is connected to a PLC output port Q0.3 through a control relay KA4, a main contact of the alternating current contactor is connected with an electromagnet, the electromagnet is powered on, and a positioning pin of the turnover plate is pulled out of the turnover table to allow the turnover table to turn.
An alternating current contactor KM5 coil is connected to a PLC output port Q0.4 through a control relay KA5, and a main contact of the alternating current contactor is connected with a frequency converter, so that the frequency converter controls a mobile station motor M2.
The input end of the frequency converter control signal is connected with a potentiometer, so that the moving speed of the mobile station motor M2 is adjusted.
The PLC is connected with the frequency converter through an RS232 cable, and the control of the PLC on the frequency converter is realized.
The system ready indicator light is connected to the PLC output port Q0.5 and is on when the system start button is pressed.
And the welding gun lifting in-place indicator lamp is connected to the PLC output port Q0.6, and when the welding gun is lifted in place, the welding gun lifting in-place indicator lamp is turned on.
The locking indicator lamp of the turnover worktable is connected to the output port Q0.7 of the PLC, and when the turnover worktable is in a locking position, the locking indicator lamp of the turnover worktable is on.
The left walking indicator lamp and the right walking indicator lamp of the mobile station are respectively connected to the output ports Q1.0 and Q1.1 of the PLC, and when the mobile station moves leftwards, the left walking indicator lamp is on; when the mobile station moves rightwards, the right walking indicator light is on.
In practical application, the operation steps and maintenance of the track link plate tooth bar repairing and welding device are as follows.
The control box is provided with a main power supply, a system is ready, the turnover worktable is locked, the mobile station travels left/right, and the welding gun is lifted to the position to indicate a lamp.
The movable control box is configured, and a system starting/stopping button, a chain plate overturning button, a mobile station left-going/stopping/right-going button and a welding speed adjusting knob are arranged on a control panel, so that the operation is convenient.
When the main power supply is switched on, the main power supply is on, and at the moment, the PLC power supply, the switch power supply and the auxiliary relay in the control unit are electrified to work.
And when a system starting button is pressed, the power supply of the mechanical motion unit is switched on, the track chain plate tooth bar repairing and welding system is ready, and a system ready indicator lamp is on.
When the welding gun exits from the mounting area of the track shoe, the lifting position travel switch is in a closed position, and the welding gun lifting in-place indicator lamp is on to allow the workbench to turn over.
When the turnover worktable is in the locking position, the locking indicator lamp of the turnover worktable is on.
The chain plate overturning button is pressed down, and the overturning workbench overturns 180 degrees. If the welding gun does not exit from the track shoe mounting area, the lifting position travel switch is in an off state, namely when the welding gun lifting in place indicator light is turned off, the button fails.
When the mobile station moves leftwards, the left walking indicator light is on; when the mobile station moves rightwards, the right walking indicator light is on.
The welding machine is ready, the length of the welding seam can be determined through the photoelectric switch shielding piece, and the maximum length of the weldable welding seam is 900 mm. The welding speed can be adjusted by a potentiometer, and the adjustment range is 10-20 cm/min.
Matters to be noted before the operation: confirming whether the locking device of the turnover worktable is locked or not; confirming that the welding gun exits from the mounting area of the track shoe; determining whether the mobile station table left/stop/right travel switch is in a stop position; confirming whether foreign matters exist on a track of a workbench of the mobile platform; after the normality is confirmed, the equipment can be started.
The matters to be noted in the operation: after welding begins, no article is placed near the equipment rail; after the start of welding, the opto-electronic switch for determining the welding start/end position is not shielded.
After the operation is finished, the power supply is cut off in time.
Machine oil (GB/T314-1994 rail oil) needs to be injected once per week at the screw nut pair in the middle of the station of the equipment; lubricating grease (nitro grease) needs to be injected into each oil injection nozzle of the motor once every fifteen working days; the linear bearings are filled with oil according to the working time of the time (GB/T314-1994 rail oil), typically once every fifteen working days.
The track chain bar restoration using the present device is further described below.
And confirming that the walking workbench is at the initial welding position. The welding gun opening and closing arms 12 are opened forwards and backwards respectively, and the welding gun integral adjusting frame 15 is withdrawn from the mounting area of the track shoe (the lifting position travel switch is in a normally closed position). The roll-over table is in the locked position (locking device is closed and the locking signal travel switch is in the normally open position).
In order to ensure that the transmission bearings are not burnt, and that the weld does not directly overlap the bearing block support 5, the mobile station 4, the base 2, etc., the weld must be connected to the weld terminal 7 and pressed.
And when a main power switch in the control cabinet is closed, the power indicator lamp is on.
Check if each position sensor is available (manually dialing the travel switch and lighting the corresponding indicator light). After confirming that the left/stop/right switch on the control box operation panel is in the stop position, a start button on the control box operation panel is pressed.
And switching on a welding machine power supply and starting the welding machine.
And (3) selecting a positioning pin 18 corresponding to the to-be-welded track shoe, adjusting the distance between the two positioning pins (the distance between the two holes close to the tooth bar side of the track shoe) and locking.
The clamping cam 20 is released, pulling the two side shoe clamping heads 19 snugly against their proximal most sides.
And (3) transversely and vertically hoisting the first crawler chain plate to be welded (with the hole at the upper side) by using a hoisting tool, and pushing the crawler plate up to the positioning pin and tightly attaching the crawler plate to the fixed turnover plate of the crawler plate when the hole is aligned with the positioning pin.
And opening the clamping cam 20 to move the clamping heads 19 at the two sides of the track shoe towards the track shoe, and locking the clamping cam 20 after the clamping heads 19 of the track shoe are tightly contacted with the edge of the track shoe. And finishing the installation of the track shoe.
After the locking is confirmed, the welding gun opening and closing arm 12 is opened forwards and backwards respectively, the welding torch is confirmed to be lifted to a designated position, and the lifting position travel switch is enabled to be in a normally closed position. Otherwise, the track shoe turnover cycloid speed reduction motor 22 cannot work and cannot turn over.
When a turnover button on an operation panel of the control box is pressed, the electromagnet 27 sucks the turnover plate, the positioning pin 26 of the turnover plate is pulled out, and the turnover plate is fixed by the creeper tread and starts to turn over.
After the creeper tread fixing turnover plate is turned over for 180 degrees, the creeper tread turnover cycloid speed reducing motor 22 stops running, the turnover stops, and the turnover plate positioning pin 26 enters the clamping groove. The turnover worktable automatically turns to the next working surface.
And repeating the process, and mounting a second to-be-welded track chain plate.
The height of the welding gun integral adjusting frame 15 can be adjusted by clamping the butterfly nut 9 through the welding gun. The welding gun integral adjusting frame 15 is adjusted back and forth by rotating the double guns and adjusting the hand wheel 16 simultaneously. The included angle of the welding wire on the vertical surface of the welding seam can be adjusted by loosening the welding gun inclination angle fixing butterfly nut 11. The amount of weld deviation between the front and back weld guns can be corrected by rotating the front weld gun adjustment handwheel 14 and the back weld gun adjustment handwheel 13, respectively. The relative position of the welding gun and the welding line is adjusted through the steps.
Moving the photoelectric switch shielding piece to confirm the initial/final welding position, setting the voltage and current required by submerged arc welding (adjustable in the welding process) to start welding, toggling a left/stop/right switch on an operation panel of the control box according to the actual welding direction, feeding welding flux to protect a welding seam, and realizing the welding of the track shoe and the tooth bar through the movement of the moving table. The actual welding speed can be adjusted by setting a potentiometer through the welding speed on the control box operation panel in the welding process.
And when the welding is finished, the left/stop/right switch is switched to a stop position, the walking workbench stops running, and the welding is stopped.
And lifting the welding gun, enabling the lifting position travel switch to be in a normally closed position, and pressing the turnover button to turn the workpiece to the next working surface.
Confirming an initial welding position, shifting a left/stop/right switch on an operation panel of the control box according to an actual welding direction, realizing the welding of the track shoe and the toothed bar through the movement of the mobile platform, shifting the left/stop/right switch to a stop position when the welding is finished, walking the working platform to stop running, stopping the welding, lifting the welding gun and enabling a lifting position travel switch to be in a normally closed position.
Confirming that the welding gun is lifted, enabling a lifting position travel switch to be in a normally closed position, and using a hoisting tool to unload the welded first track chain plate.
And hoisting the crawler chain plate to be welded to the turnover worktable again, locking the crawler chain plate, pressing the turnover button, turning the turnover worktable to the next working surface, and repeating the process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The device is characterized by comprising a mechanical motion unit, wherein the mechanical motion unit is composed of four parts, namely a chain plate fixing mechanism, a workbench turnover mechanism, a welding gun position adjusting mechanism and a travelling mechanism.
2. The track link joint fillet repair welding device according to claim 1, wherein the link joint fixing mechanism is composed of a track plate fixing turnover plate (17) for installing the track link joint and turning over, a positioning pin (18), a track plate clamping head (19) and a clamping cam (20), the track plate fixing turnover plate (17) is fixedly provided with the track plate to be welded through the positioning pin (18) and the track plate clamping head (19); the workbench turnover mechanism is composed of a bearing seat (8), a bearing seat support (5), a gear (21), a track shoe turnover cycloid speed reducing motor (22), a turnover plate positioning pin (26) and an electromagnet (27), the bearing seat (8) is installed on the bearing seat support (5), and the bearing seat (8) is driven by the track shoe turnover cycloid speed reducing motor (22); the welding gun position adjusting mechanism consists of a welding gun clamping butterfly nut (9), a welding gun insulating sleeve (10), a welding gun inclination angle fixing butterfly nut (11), an opening and closing arm (12), a back welding gun adjusting hand wheel (13), a front welding gun adjusting hand wheel (14), a welding gun integral adjusting frame (15), a double-gun simultaneous front and back adjusting hand wheel (16), a fixing screw nut sliding block (23), a front gun adjusting sliding block (24) and a back gun adjusting sliding block (25); running gear comprises guide rail (1), base (2), slider (3), mobile station (4), screw frame (29), mobile station control cycloid gear motor (30), sprocket (31) and lead screw (32), install guide rail (1) and mobile station control cycloid gear motor (30) on base (2), be provided with mobile station (4) on guide rail (1), be provided with slider (3) between mobile station (4) and guide rail (1), install bearing housing support (5) and grip-pad upset cycloid gear motor (22) on mobile station (4).
3. The apparatus for repairing and welding the track link plate element as claimed in claim 2, further comprising a control unit for controlling the mechanical movement unit.
4. The welding device for repairing the track link joint tooth bar in claim 3, wherein the control unit comprises a circuit breaker, a 24V20A switching power supply, a PLC, a frequency converter, communication between the PLC and the frequency converter, an AC contactor, a control relay, a thermal overload relay, an emergency stop switch, a button switch, a travel switch, a signal lamp, a tooth bar conveying mechanism motor, a turnover table motor, a moving table motor and a speed regulation potentiometer.
5. The welding device for repairing the track link joint tooth bar of claim 4, wherein a control relay is used to cooperate with an AC contactor as a medium for communication between the PLC output terminal and the motor; thermal overload relays are arranged between main contacts of alternating current contactors KM1 and KM2 and a motor M1 of the rack conveying mechanism, between a main contact of the alternating current contactor KM3 and a motor M2 of the overturning table, and between a control output end of a motor of the frequency converter and a motor M2 of the mobile table.
6. The track link joint tooth bar repairing and welding device of claim 4, wherein the specific connection mode between the PLC output port and the motor is as follows: the PLC output port is connected with a control relay coil, a normally open contact of the control relay is connected with an alternating current contactor coil, and three-phase electricity is connected to a motor wiring terminal through the normally open contact of the alternating current contactor.
7. The track link joint tooth bar restoration welding device of claim 4, wherein the PLC input port is configured as follows:
the overturning platform positioning pin pulling-out limit switch SE1 is connected between the PLC input port I0.0 and the PLC24V output port;
a thread strip feeding in-place travel switch SE2 is connected between a PLC input port I0.1 and a PLC24V output port;
the stroke switch SE3 for the tooth bar to exit to the position is connected between the PLC input port I0.2 and the PLC24V output port;
the travel switch SE4 for the welding start position of the mobile station is connected between the PLC input port I0.3 and the PLC24V output port;
the travel switch SE5 at the welding termination position of the mobile station is connected between the PLC input port I0.4 and the PLC24V output port;
the tooth bar feeding switch SB1 is connected between the PLC input port I0.5 and the PLC24V output port;
the tooth bar exit switch SB2 is connected between the PLC input port I0.6 and the PLC24V output port;
the overturning platform overturning switch SB3 is connected between the PLC input port I0.7 and the PLC24V output port;
the forward operation switch SB4 of the mobile station is connected between the PLC input port I1.0 and the PLC24V output port;
the reverse operation switch SB5 of the mobile station is connected between the PLC input port I1.1 and the PLC24V output port.
8. The track link joint tooth bar repair welding apparatus of claim 4, wherein the PLC output port is configured as follows:
an alternating current contactor KM1 coil is connected to a PLC output port Q0.0 through a control relay KA1, and a main contact of the alternating current contactor is connected with a tooth bar conveying mechanism motor to enable the tooth bar conveying mechanism motor M1 to rotate forwards; an alternating current contactor KM2 coil is connected to a PLC output port Q0.1 through a control relay KA2, and a main contact of the alternating current contactor is connected with a motor of the dental strip transmission mechanism to enable the motor M1 of the dental strip transmission mechanism to rotate reversely;
an alternating current contactor KM3 coil is connected to a PLC output port Q0.2 through a control relay KA3, and a main contact of the alternating current contactor is connected with a motor of the overturning platform, so that the motor M2 of the overturning platform rotates 180 degrees;
an alternating current contactor KM4 coil is connected to a PLC output port Q0.3 through a control relay KA4, a main contact of the alternating current contactor is connected with an electromagnet, the electromagnet is powered up, a positioning pin of a turnover plate is pulled out of a turnover table, and the turnover table is allowed to turn over;
an alternating current contactor KM5 coil is connected to a PLC output port Q0.4 through a control relay KA5, and a main contact of the alternating current contactor is connected with a frequency converter, so that the frequency converter can control a mobile station motor M2;
the input end of the frequency converter control signal is connected with a potentiometer to realize the adjustment of the moving speed of the mobile station motor M2;
the PLC is connected with the frequency converter through an RS232 cable, so that the PLC controls the frequency converter;
the system readiness indicator light is connected to the PLC output port Q0.5;
the welding gun lifting in-place indicator lamp is connected to a PLC output port Q0.6;
the locking indicator lamp of the turnover worktable is connected to the output port Q0.7 of the PLC;
the left walking indicator light and the right walking indicator light of the mobile station are respectively connected to the output ports Q1.0 and Q1.1 of the PLC.
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| CN201911000982.3A CN110744248B (en) | 2019-10-21 | 2019-10-21 | Welding set is restoreed to track link joint tooth strip |
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| CN201911000982.3A CN110744248B (en) | 2019-10-21 | 2019-10-21 | Welding set is restoreed to track link joint tooth strip |
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| CN110744248B CN110744248B (en) | 2021-12-14 |
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| CN110744248B (en) | 2021-12-14 |
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